Value Collection 203116C Hex Head Cap Screw 5/16-18

Product Description

The VALUE COLLECTION 203116C is a hex head cap screw designed for use in corrosion-resistant fastening applications. It features a 5/16-18 UNC thread and a 1-1/4 inch length under head, machined from Grade 316 stainless steel. Grade 316 provides superior resistance to chlorides, salt water, and acidic environments compared to standard 304 stainless. The 1/2 inch hex drive accommodates standard wrenches and sockets. This fastener is appropriate for mechanical assemblers, maintenance technicians, plumbers, and marine tradespeople who require a reliable, corrosion-resistant threaded fastener in inch-standard sizing.

This screw is suited for residential and commercial applications where exposure to moisture, chemicals, or marine environments is a concern. Common install scenarios include HVAC equipment mounting, plumbing fixture assembly, pool and spa equipment hardware, and general mechanical fabrication requiring stainless fasteners. It conforms to inch measurement standards with UNC thread form, making it compatible with standard tapped holes and nuts in that specification.

Key Features

• Grade 316 stainless steel construction for high corrosion resistance in wet and chemical environments
• 5/16-18 UNC thread form for compatibility with standard inch-system tapped holes and hex nuts
• 1-1/4 inch length under head for reliable clamping depth in typical structural fastening
• 1/2 inch hex drive works with standard wrenches, sockets, and nut drivers
• Inch measurement system for use in domestic trade and mechanical applications

Compatibility

Designed as an OEM-style replacement or general-use fastener for applications requiring a 5/16-18 UNC hex head cap screw in Grade 316 stainless steel with a 1-1/4 inch length under head.

Installation Notes

Installation is performed using a standard 1/2 inch wrench or socket driver. Apply appropriate thread lubricant or anti-seize compound when fastening into dissimilar metals to prevent galling, which is a common issue with stainless steel fasteners. Do not overtighten, as stainless steel is susceptible to galling and thread damage under excessive torque. Follow applicable mechanical codes and equipment manufacturer specifications for fastener torque requirements.